1cupwhole raw buckwheat groatsground (grind them in a coffee grinder or high powered blender like Blend Tec) You could also sub oat flour if you can't find the groats.
In a large bowl or liquid measuring cup, pour the boiling water over the oatmeal. Let them soften for about 10 minutes, and then add the remaining wet ingredients.
Set aside to curdle the milk a bit while you mix the dry.
Mix the dry ingredients together.
Pour the wet ingredients over the top and mix well.
Pour into a greased loaf pan.
Sprinkle with a bit of oatmeal if you like. Bake in the preheated oven for 40-50 minutes, until a knife inserted in the middle comes out clean.
Let cool 10-15 minutes before removing from pan. Although you can slice right away, it is easier to slice when it has cooled completely!